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r r I� r r rr r r r Ir r Ir Ir Illlr Illr r■r rr �r Illlr <br /> S <br /> Table 9 <br /> C-Sparge System Pilot Test <br /> Groundwater Chemical Analytical Data <br /> Former Unocal Service Station#0187 <br /> 437 East Miner Avenue, Stockton <br /> Explanation: <br /> Wells were not purged prior to sampling. <br /> DO- Dissolved oxygen; reading were taken after collection of groundwater samples. <br /> TPHg =Total Petroleum Hydrocarbons as gasoline <br /> MTBE=Methyl tert-butyl ether <br /> ppm = parts per million <br /> ppb=parts per billion <br /> 111 Wells purged prior to sampling. <br /> [21 Laboratory report indicates gasoline C6-C12- <br /> [3)MTBE by EPA Method 8260. <br /> 141 Laboratory report indicates weathered gasoline C6-C12. <br /> [51 Laboratory report indicates unidentified hydrocarbons C6-C12 <br /> [61 hydrocarbon pattern is present in the requested fuel quantitation range, <br /> but does not resemble the pattern of the requested fuel. <br /> First ozone microsparge system began operating on December 12, 2000. <br /> Second ozone microsparge system began operating on April 26, 2002 <br /> 06940-325 17 ENSR Corporation <br />